Insulator.



PATENTED JAN. 21, 1908. H. W. BUCK. INSULATOR.

HAROLD w. B'Ucn, oF NIAGARA FALLs, NEW Yoan. V

INSULATOR.

in). evaoso. f

Speoification of Letters Patent.

Patented Jan. 21, 1908.

Application filed July 29. 1902. Serial No. 117.562.

TofaZlfwh-omit may concern;

.Be it known that I', HARQLD W. Buck," a citizenV of the United States,residing at Niagara Falls, in the county vof Niagara, State'of New York,have invented certain new and useful Improvements in Insulators, ofwhichl the following is a specification.

M invention relates to improvements in insu ators for high potentiallines.`

The object of my inventionis the production of an insulator forsupporting high po- .tential lines in Which there is no tendency topuncture andvin which the resistance to creepage can 'be-made vverylarge.

.A further object 'of my invention is the production. ofan insulatorWhich is comparatively inexpensive 'and but little affected by rain.

In the drawing, Figure 1 shows'a front elevation of a sup ort with threeof my insulators mounted t ereon; Fig. 2 is an 'enlarged detail viewpartly in section showing one form of my insulator; while Fig. 3 is 'asimilar view showing a modification .thereof lI have shown in' thedrawing a pole or support 1 carrying a long cross arm 2 bearing two ofmyinsulators, and a short cross arm bearing one of my insulators. Theparticular arrangementA yshown is "designed to carry high otential threephase transmission lines. he three insulators 7 shown are identical inconstruction. The are made of glass or porcelain, are tubu ar in form,and are encircled by a series ofrid es or corrugations 8, vandvcorr'cspomling epressions 9 to increaselthe distance over which thecreepage current must travel. I

The axis of'the insulator is horizontal so i that the planes of thecorrugations are` vertical. Wooden. blocks 4 are inserted in the ends'of the tubular insulators and in these wooden blocks are screwed'vertical upri hts or supports 5 having threaded ends 6. he

' supports 5 are secured in turn in any suitable manner to thehorizontal cross pieces 2 and 3..

In Fig. 3 I have shown another embodivment of my invention inwhich theinsulator is madeizf-Isolid and radial recesses 16' ,are formed neareach end in which the supports 5 are screwed in the same manner as theyare screwed in the wooden blocks 4 in the other form. In each case theconductor 10 Which it is desired to sup ort by the insulator lies in'the depression 9 ocated between themiddle pair of corrugations or ribs8 and is secured by the wire 11 in the ordinary manner.

The middle pair of ridges may be se arated to. a greater distance thanthe ot ers if necessary, to receive the Wire. y

Among the advantages obtained by my construction are the following: Thelinsulator is a perfectly symmetrical solid of revolution, and istherefore easy to mold in porcelain or glass; secondly, the ridges orribs are disposed invertical planes so that there is no tendency forwater to drip' from one to the other as in the ordinary construction andthus electrically connect the petticoats;

thirdly, as there. is no iron or other conductor in the interior of theinsulator there will be no tendency to puncture` and the insulator willhave to be designed for surface leakage only so that a high grade'porcelain or' glassV is not necessary. 1

What I' claim as new and desire to secure by Letters Patent of theUnited States, 'is- 1. In combination, an insulator comprising a solidcylindrical substantially horlzontally` disposed body formed out ofinsulating material and enciroled bya series of corrugations, means forsupportingsaid body engaging the body only at its ends, and a conductorextending transversely to said bodi-y and supported thereby between vapair of a jacent corrugations.

2. An insulator for electric Conductors, comprising a cylindrical bodyencircled by a series ofcorrugations and having a socket or' recessformed in each end, and supports V forflsa1d body entenn said sockets orrecesses and extendin radial y from said body. 3.1An insu ator forelectrical conductors, comprising a solid cylindrical 'body madeentirely out of insulating material, the said.

body being horizontally disposed', encircled by a series of corrugationsand supported at its ends only. .I

4. An insulator for electrical conductors, comprising a longcylindricalbod made entirely out of insulating materia, the said bod beinghorizontally disposed and encirc ed by a series of corrugations,recesses being formed in the ends of said body eX- tending inwar'd fromthe "cylindrical surface of said body, and supports for entering saidreceses and sustaining said body,

5. lAn insulator for electric conductors comprising a cylindrical bodyof insulating material encircled by a series of corrugations andprovided at each end with a support receiving opening or recess, and apair of supports for the body, one catering thr recess or opening at oneend of the body and the other in each end; and supports for said bodyenenterin the opening or reoesev at the opposite tering said sockets orrecesses. 10 end of t e body. In witness Whereof, I'have hereunto set my6. An insulator for electric conduetors 1 hand this twenty-sixth day ofJuly, 1902. comprisin a horizontally disposed one piece i HAROLD W'.BUCK.

cylindrica body of insulating material en- 1Witnesses: ciroled by aseries of corrugations and having WM. M. BLAIR, a support recexvingsocket or recess formed C. W. OLMSTED.

